Mt Roraima – Guyana Highpoint June 26 – July 2, 2026 50 miles, 10kft gain Eric Gilbertson and Andres Rodriguez Survey results: I determined the true highpoint of Guyana is at location (5.210989, -60.739325) with elevation 2805.8m +/-0.1m EGM2008. This is also the true summit of Mt Roraima which, contrary… Continue reading
Blue Mtn Peak and Middle Peak, Highpoints of Jamaica June 23, 2026 Eric Gilbertson 16 miles, 4700ft gain Results (EGM2008, 95% confidence interval errors) Middle Peak: 2254.02m +/-0.04m Blue Mountain Peak: 2253.99m +/-0.03m SE Peak: 2253.16m +/-0.14m Blue Mountain Peak and Middle Peak are tied for the country highpoint…. Continue reading
East Crestone and Crestone Second Surveys June 15-17, 2026 Eric Gilbertson, Hannah Finch, Matt Sewick, Ethan Moe Abstract East Crestone is a mountain in South Central Colorado near Crestone Peak. In October, 2025 we measured both peaks with GNSS (Global Navigation Satellite System) units and discovered East Crestone is taller… Continue reading
The GNSS-Based Colorado Centennials List May-June, 2026 Eric Gilbertson, Elijah Gendron, Dylan Kilby, Ben Loftin, Joseph Thompson Abstract The Colorado Centennials List, composed of the 100 highest peaks in Colorado with at least 300 ft of prominence, is a popular peakbagging objective in Colorado. The list was originally based on… Continue reading
Mt Rainier via Emmons June 12/13, 2026 Eric Gilbertson, Peter Steele, Thomas Coleman 11:30pm – 6pm, 20 miles, 11kft gain I decided to get one last ski trip in for the season on Rainier. We drove to Paradise Friday afternoon and the staff advised us that the ladders had fallen… Continue reading
Lightning Bolt (8,830ft), First Ascent NW Buttress to NE Ridge (5.5 M1 steep snow, 300m) Eric Gilbertson and Nick Roy June 6-8, 2026 We found another unclimbed peak in WA, and this one is tall enough and prominent enough that it might potentially become a new Washington Top 100 peak… Continue reading
Lake Dorothy Packrafting May 29-31, 2026 Eric and Matthew 24 miles hiking, 5 miles packrafting The Alpine Lakes Wilderness in WA has roughly 300 officially named lakes, but only about half a dozen have islands, and of these it appears only Lake Dorothy has islands that might be big enough… Continue reading
Mt Elbert Survey, Colorado Highpoint May 23, 2026 Eric Gilbertson, Rob Painter, Matt Sewick 5am – 6pm, 10 miles, 4.5kft gain Results: Mt Elbert summit is 14,439.45ft +/-0.04ft (NAD83 2011 Epoch 2010 NAVD88 Geoid 18) Location (39.1177295861, -106.445353442) (Note: elevation in beta version of NAPGD2022 Geoid19B, the upcoming new US… Continue reading
Mount Whitney and Mount Muir Surveys May 9, 2026 Eric Gilbertson 3am – 5pm, 18 miles, 6500ft gain Results: Mt Whitney – 14,500.70ft +/-0.04ft NAVD88 Location (36.57860975, -118.291999061) Mt Muir – 14,028.4 ft +/-0.2ft NAVD88, prominence 318.6ft Mount Whitney is the tallest peak in the lower 48 states and is… Continue reading
Rainier and Liberty Cap Spring Survey 2026 May 3, 2026 15.5 miles, 10.5kft gain Eric Gilbertson, Olly Cohen, Tim Hambidge Summary of results: Columbia Crest accumulated 1.3ft of snow and Liberty Cap accumulated 9.7ft of snow over the winter. I’m continuing surveying all the current and former icecap peaks at… Continue reading